144040020023420 has 48 divisors (see below), whose sum is σ = 312310877104128. Its totient is φ = 55745054729280.

The previous prime is 144040020023377. The next prime is 144040020023507. The reversal of 144040020023420 is 24320020040441.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 144040020023420.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22979192 + ... + 28567871.

It is an arithmetic number, because the mean of its divisors is an integer number (6506476606336).

Almost surely, 2^{144040020023420} is an apocalyptic number.

144040020023420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

144040020023420 is an abundant number, since it is smaller than the sum of its proper divisors (168270857080708).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

144040020023420 is a wasteful number, since it uses less digits than its factorization.

144040020023420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51551610 (or 51551608 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 26.

Adding to 144040020023420 its reverse (24320020040441), we get a palindrome (168360040063861).

The spelling of 144040020023420 in words is "one hundred forty-four trillion, forty billion, twenty million, twenty-three thousand, four hundred twenty".